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8 papers
2-loop short-distance constraints for the HLbL
Johan Bijnens, Nils Hermansson-Truedsson, Laetitia Laub +1
The recent experimental measurement of the muon at Fermilab National Laboratory, at a tension with the Standard Model prediction, highlights the need for further impro…
Short-distance constraints for the longitudinal component of the hadronic light-by-light amplitude: an update
Gilberto Colangelo, Franziska Hagelstein, Martin Hoferichter +2
We reassess the impact of short-distance constraints for the longitudinal component of the hadronic light-by-light amplitude on the anomalous magnetic moment of the muon, $a_μ=(g-2…
The two-loop perturbative correction to the (g-2) HLbL at short distances
Johan Bijnens, Nils Hermansson-Truedsson, Laetitia Laub +1
The short-distance behaviour of the hadronic light-by-light (HLbL) contribution to has recently been studied by means of an operator product expansion in a background ele…
Short-distance HLbL contributions to the muon g-2
Johan Bijnens, Nils Hermansson-Truedsson, Laetitia Laub +1
The current discrepancy between the Standard Model prediction and the experimental value of the muon anomalous magnetic moment could be a hint for the existence of new physi…
Short-distance HLbL contributions to the muon anomalous magnetic moment beyond perturbation theory
Johan Bijnens, Nils Hermansson-Truedsson, Laetitia Laub +1
The hadronic light-by-light contribution to the muon anomalous magnetic moment depends on an integration over three off-shell momenta squared () of the correlator of four el…
The anomalous magnetic moment of the muon in the Standard Model
T. Aoyama, N. Asmussen, M. Benayoun +129
We review the present status of the Standard Model calculation of the anomalous magnetic moment of the muon. This is performed in a perturbative expansion in the fine-structure con…
Longitudinal short-distance constraints for the hadronic light-by-light contribution to with large- Regge models
Gilberto Colangelo, Franziska Hagelstein, Martin Hoferichter +2
While the low-energy part of the hadronic light-by-light (HLbL) tensor can be constrained from data using dispersion relations, for a full evaluation of its contribution to the ano…
Short-distance constraints on hadronic light-by-light scattering in the anomalous magnetic moment of the muon
Gilberto Colangelo, Franziska Hagelstein, Martin Hoferichter +2
A key ingredient in the evaluation of hadronic light-by-light (HLbL) scattering in the anomalous magnetic moment of the muon concerns short-distance constraints (SDCs) th…